Sewer catch basin



April 3, 1928. 1,664,853 E. W. FlRTH Y SEWER CATCH BASIN Filed March 2'. 1927 2 Sheets-Sheet 2 INVENToR.

` ATTORNEY.

Patented Apr. 3, 1928.

UNiTlazfDA STATES p y y 1,664,853 PATENT OFFICE.

ELMER W. FIRTH, OF JAMAICA, NEW' YORK, vASSIGNOR OF ONE-HALF T0 HUGH GORDON MILLER, OF NEW YORK, N. Y.

SEWERV CATCH BASIN.

Application filed March 2, 1927. Serial No. 171,938. A

My present invention relates to improvements in catch basins and it has for its object to provide a device of this character for use in conjunction with the street inlets of a municipal sewer system having its parts arranged to accommodate both the normal and occasional excess flow of surface water. A further object of the invention is the provision, in conjunction ywith a lreceptacle for catching and retaining the sediment and street litter which may be periodically removed, of means for relieving the suction created upon the removal of the receptacle, and a special form of outlet boXor chamber which forms a water seal for the drainpipe at all times and is -so arranged that its parts do not interfere with the removal of the receptacle and which also aifords access'to the drain pipe to permit the latter to be cleaned by the insertion of a rod or flushing nozzle either from within the basin orfrom the street level.

To these and otlier'ends, my invention consists in further `improvements all 'of which will be more fully described and the novel features particularly `pointed out in the appended claims.

In the drawings:

Fig. v1 is a vertical sectional view of a sewer catch basin embodying lmy invention.

Fig. 2 is a top view of the basin shown in Fig. 1 with the cover and receptacle removed'.

Figs. 3, 4 and 5 are plan, elevation and side views of the curb piece.

Figs. 6 and 7 are detail views showing various ways in which the pressure relief passagev may be formed.

Figs. 8, 9, and 10, are detail views of an offset water trap and water trap chamber used in the catch basin.

Similar reference characters in the several figures indicate similar parts.

` In carrying out my invention in its cominercial form I build the .catch basin 1 of tile, concrete or the like, belowthe street level 2 with a wall 3 which is preferably circular', and of an internal diameter and depth sufficient to accommodate a receptacle 4 of such a size as to permit its easy removal when filled. The basin is closed atV the bottom 5 and its walls 3 terminate a short distance below the street level to accommodate a basin head 6. The latter I form of cast iron or the like in the shape of a semi-oval, with its curved portion surrounding the basin 1 and its straight side 7 lying substantially parallel to the curb line 8. T he head 6 is constructed with a depression or seat 9 extending around its upper edge into which kcover 10 fits, and with a base 11 supportingr it on the basin wall. I also form the head 6 at its curb end so that sloping surfaces 12 areprovided at the top of the wall 3 to lead water entering the basin from the street gutter 13 into the basin proper. The surfaces 12 extend downwardly at aslight angle to their point of meeting at the center to form an'inwardly inclined trough which is suficient to direct a small stream into the center lofthe basin. The. end 7 of the basin head 6 is provided with a raised rim 14 which is provided with bolt holes and bolts 15 and is arranged to hold the removable curb piece 16. in place by means of said bolts 15 and nuts upon them. Curb piece 16, I ind to be most conveniently made with a skirt 17 having in it slots 18 which slots engage bolts 15. I find this arrangement of a basin head and separate curb piece to be advantageous on two accounts; it facilitates replacement of the curb piece in the event of its becoming broken by obviating the necessity for reinstalling an entire basin head which process ,requires the expenditure of considerable labor' by making it possible to replace only the broken curb piece, leaving the basin head undisturbed, and the arrangement permits adjustmentof the curb pieceA relative to the head during construction, so that discrepancies in curb heights may readily be compensated for.

- The arrangement of the details of the curb piece 16 is clearly shown in Figs. 8, 4 and 5.

Removal of receptacle 4 from the catch basin is often rendered difficult due to a combination of factors, namely the comparatively close vfitting of the receptacle 4 within the wall 3 combined with the viscosity of the fluid inthe basin which-results in a difference of fluid pressureV between the top and bottom sides ofthe bottom of receptacle 4 when movement of receptacle 4 is attempted and one of the features of my invention is to provide a passage 19 for nullifying such a difference in pressures which hinders the removal of the receptacle and its insertion. 20 is an opening connecting passage 19 with the bottom 5 of the catch basin 1. At 21,v I show a removable perforated cap on the top ot'passage 19 which permits How of air in the passage 19 when receptacle 4 is moved. rI'he cap 21 is removable in order to provide for cleaning the passage 2() from above by flushing or by a rod or both. In my im proved catch basin, passage 19 may consist of aV pipe built into basin wall 3or it` may be arranged exterior to the wall 3. In Figs. 6 and 7, I have illustrated alternative arrangements ot said passage 19. In Fig. 6, the cap 2l is shown as being perforated as at 29; In Fig. 7, 23. is the inlet to passage 19 (or outlet, depending on whether; receptacle 4V is being removed or replaced). and cap 24 is removable but not perforated. In either arrangement where the cap is employed I extend thev passage or vent. pipe upwardly to4 a point where it is accessible upon removalof the cover plate 10.

VA further feature ot my invention coma prises the outlet and watertrap arrangements interposed between the catch basin andthe main sewer line, so that the connectinglsewer lateral may be more readily cleaned, either by so called redding out,V or by flushing from within the basin or from the street level. These parts are so arranged that they will not'inter'tere with easy removal ot" receptacle 4. I arrange the outlet pipe or lateral 25. leading to the sewer line 26 so. that it communicates with basin 1 by a nipple connection 27 lformed on abasin ontletchamber 28. This chamber is shaped so as to have the nipple apertureA therein centered above the lowest portion of the. chamber soA that when the basin l is filled to overflowing the lowest outlet point 29 through the nipple 27', the chamber 28 will be partly lilled with water. rIhe water trap is then termed byarranging a closely-'fitting plate 30, havinga handle 31, and removably supported in chamberQSin such a way ask to have its-.loweredge below. the .level ofV the water line' C which is determined: by thek location' ont point ot junction o'fnipple 27 and chamber 28. In my preferred arrangement, AI provide lil-,shaped supports or notched 'lugs 3,2 on opposite sides of chainber 28 which hold the plate o'lf plate 30. A lip 33 extends downwardly from and across the top ot chamber 28, and is made with suiiicient distancey between its lower edge and top connection with chamber 28 tovallow the plate to be movedil up sufficiently so that the lowery edge ot' the plate will'clear its sup-` ports when it isbeing removed. l Iftake care also to make lip 3,3 of su'liicient depth so that when plate 30 is fullyl seated. in supports 32, the upper edge of plate 30 andv the lower. edge of lip 33 will form a4 reasonably close t. to make a gas tight joint. In order to provide for holding plate 30 firmly against lip 33 I also provide lugs or bosses Saou the sides of chamber 28 against which plate 30 also bearsin its seated position. As

will be seen from the drawings, particularly In Figs. 8, 9 and 10, I

tates cleaning operations,all ot the'parts are so placed that they are out of thpath Of.

movement of the receptacle 4 whenitis-.be-v

ing inserted or removed.

IVhat I claiml is:-

1. In a sewer catch basin arranged to receive a. removable receptacle comprising a,

surrounding wallhaving` an Outlet located' above4 the top of such receptacle, apressure l relief pipeliavinghan air inlet located above l.

the bottom of the outlet andan aijrfY outlet positionedto relieve the suction at` thevbot tom of the basin created uponreinoval ofl said receptacle, and a removable cap on the upper end of'sad pipe.

2'. In` a sewer catch basin, the combination, with a: basin wall, havingl an aperture, otan outlet chamber cooperating .with l the v alperfY-VYy ture and having a pipe nipple tlrcrbottom edgeof which extends above,v the lower. edlge ot' the chamber, andV aI removable cover .plate-1 within the chamber extending 4downwardly.

trom` the top ofthe chamber to a planefbef. low said bottom of the nipple. p

3. In a sewer, catch,basintarrangedpto re ceive a. removable receptacle, anidphayin-g. a surrounding wall providedrwith.l an outlet opening. establishing awaterline, the vcombi-- nation with an outlet Chamber extending above and below. said water line hay-ingl a' depending lip at its upperedge, of supports in said chamber, and a plate-remos@ ably held. by said-supports cooperating,with

said lip and arranged.with-` itslower edge beneath the water level to,` form Vavvzuse'r trapI in said chamber.

. ELMER ELM-THe 'lim 

